when i look up steaming they all say to use a steamer basket or something to suspend food above water....ok i get that. but u also steam if i bake something with a cover ,like foil. i am holding in the steam,sooooo i am steaming the item here too,right? or say i use a foil packet to steam food too. so why doesnt it mention these types of steaming when u look up steaming. what would be the difference between foil pack veg. in oven ,,,,steamed this way and one done with a steamer basket?